Living in Vancouver, BC; LTE has a few weak spots here, but in general LTE is fast and reliable, and gets me download and upload speeds of between 20-30 megabits per second. It's a faster download than my fibre connection to my apartment (by 20%), and faster upload (by 200%).
I'd say that's pretty significant. I get that Google maybe can't fit an LTE chip into a phone cheaply, and that LTE is the card that carriers are willing to withhold playing to get concessions out of Google, but saying that LTE unavailable, unreliable, and inconsistent just sounds like the sort of apologetics that iPhone users have been accused of for years (since back when LTE was unavailable, unreliable, and inconsistent).